HealthcareDiscovery.AI / Doctors / California / Internal Medicine

Internal Medicine Doctors in California

Data updated monthly · Last refresh October 2026

17,715 Internal Medicine providers practice in California, including 4,245 (24%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

17,715providers
4,245telehealth
Los Angelestop city

Internal Medicine by city in California

Choose a city to see providers there.

Internal Medicine in Los Angeles1,417 providers
Internal Medicine in San Francisco1,322 providers
Internal Medicine in San Diego970 providers
Internal Medicine in Sacramento602 providers
Internal Medicine in Oakland434 providers
Internal Medicine in San Jose433 providers
Internal Medicine in Stanford383 providers
Internal Medicine in Fresno339 providers
Internal Medicine in Torrance230 providers
Internal Medicine in Long Beach225 providers
Internal Medicine in Bakersfield210 providers
Internal Medicine in Loma Linda209 providers
Internal Medicine in Palo Alto189 providers
Internal Medicine in Anaheim188 providers
Internal Medicine in Orange188 providers
Internal Medicine in Riverside188 providers
Internal Medicine in Walnut Creek184 providers
Internal Medicine in Santa Monica170 providers
Internal Medicine in La Jolla161 providers
Internal Medicine in Roseville159 providers
Internal Medicine in Irvine155 providers
Internal Medicine in Beverly Hills152 providers
Internal Medicine in Santa Clara142 providers
Internal Medicine in Pasadena138 providers

Internal Medicine providers in California

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Aloukika Shah, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7900
Dr. Alvin Rajkomar, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Alvin Wong, M.D.
San Francisco, CA · $43 in drug and device payments (2025) · (415) 387-1534
Dr. Alyce Tarcher, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 863-0400
Dr. Amanda Johnson, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (650) 814-4863
Dr. Amanda Wulfstat, MD
San Francisco, CA · $192 in drug and device payments (2025) · (415) 830-3090
Dr. Amandeep Shergill, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Amar Desai, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-2172
Dr. Amelie Meltzer, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-7527
Dr. Ami Parekh, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-4816
Dr. Amy Baca, M.D.
San Francisco, CA · $17 in drug and device payments (2025) · Telehealth · (415) 600-4750
Dr. Amy Bossen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 885-5888
Dr. Amy Hecht, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 296-8997
Dr. Amy Heinzerling, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Amy Lin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2421
Dr. Amy Metzger Mchardy, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (855) 527-1850
Dr. Amy Noack, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8494
Dr. Amy Ou
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2362
Dr. Amy Pugh, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Amy Tang, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 391-9686
Dr. Amy Tezza, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Anamika Gupta, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-6000
Dr. Anand Dhruva, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-4082
Dr. Ana Padula, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-4624
Dr. Anas Hana, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Anderson Eng, D.O.
San Francisco, CA · $387 in drug and device payments (2025) · (415) 677-2388
Dr. Andrea Bocobo, DO
San Francisco, CA · No drug or device payments recorded (2025) · (415) 514-4533
Dr. Andrea Kung, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 292-8687
Dr. Andrei Goga, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7070
Dr. Andres Nieto, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (800) 997-6196
Dr. Andrew Auerbach, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 502-1414
Dr. Andrew Bindman, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-6095
Dr. Andrew Diamond, MD, PHD
San Francisco, CA · $418 in drug and device payments (2025) · (888) 663-6331
Dr. Andrew Escobar, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-5760
Dr. Andrew Giang, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Andrew Hooker, MD
San Francisco, CA · $98 in drug and device payments (2025) · Telehealth · (415) 600-5400
Dr. Andrew Posselt, MD
San Francisco, CA · $26,614 in drug and device payments (2025) · Telehealth · (415) 353-2318
Dr. Andrew Van Vugt, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (855) 516-7755
Dr. Andrew Wang, M.D
San Francisco, CA · $77 in drug and device payments (2025) · (418) 771-4366
Dr. Andria Langenberg, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8680
Dr. Andy Liu, MD
San Francisco, CA · $67 in drug and device payments (2025) · (415) 600-6000
Dr. Angele Labastide, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-5760
Dr. Anindita Chakrabarti, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-5909
Dr. Anita Demas, M.D.
San Francisco, CA · $16 in drug and device payments (2025) · Telehealth · (415) 674-5200
Dr. Anitha Menon Vinodkumar, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1529
Dr. Anjuli Piya, M.D.
San Francisco, CA · $100 in drug and device payments (2025) · (415) 417-3501
Dr. Anna Abramson, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Anna Bracewell, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Anna Chodos, M.D., M.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 206-5164
Dr. Ann Bolger, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-3503

Conditions Internal Medicine providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in California?

There are 17,715 Internal Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in California offer telehealth?

Yes. 4,245 of the 17,715 Internal Medicine providers in California (about 24%) report offering telehealth services in CMS data.

Which cities in California have the most Internal Medicine providers?

Los Angeles (1,417), San Francisco (1,322), San Diego (970) have the highest concentration of Internal Medicine providers in California.

How many Internal Medicine providers in California received drug or device company payments?

5,614 of 17,715 Internal Medicine providers in California (32%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in California treat?

Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Internal Medicine Doctors in California work in independent practices or large health systems?

Among 10,847 Internal Medicine Doctors in California enrolled in Medicare, 20% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in California work at?

According to CMS facility affiliation records, the California hospitals where the most Internal Medicine Doctors hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.

Related reading on HealthcareDiscovery.AI

Internal Medicine in all 50 states Search all 17,715 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in California? Get featured.